Graham Schaffer

A Comparison of Statistically Equivalent and Realistic Microstructural Representative Volume Elements for Crystal Plasticity Models

F Azhari, W Davids, H Chen, SP Ringer, C Wallbrink, Z Sterjovski, BR Crawford, D Agius, CH Wang, G Schaffer

Journal article  |  2022  |  Integrating Materials and Manufacturing Innovation

Two methods used to construct a microstructural representative volume element (RVE) were evaluated for their accuracy when used in..

Computational Alloy Design for Process-Related Uncertainties in Powder Metallurgy

TT Molla, A Atthapreyangkul, GB Schaffer

Journal article  |  2022  |  INTEGRATING MATERIALS AND MANUFACTURING INNOVATION

An integrated computational materials engineering approach to the design of alloys for supersolidus liquid phase sintering has bee..

Predicting the complete tensile properties of additively manufactured Ti-6Al-4V by integrating three-dimensional microstructure statistics with a crystal plasticity model

Fatemeh Azhari, Chris Wallbrink, Zoran Sterjovski, Bruce R Crawford, Adrian Menzel, Dylan Agius, Chun H Wang, Graham Schaffer

Journal article  |  2021  |  INTERNATIONAL JOURNAL OF PLASTICITY

A multiscale finite element model integrating microstructure statistics with an enhanced three-dimensional (3D) crystal plasticity..

Integrating phase field and crystal plasticity finite element models for simulations of titanium alloy Ti-5553

Dylan Agius, Patrick O'Toole, Chris Wallbrink, Zoran Sterjovski, Chun-Hui Wang, GB Schaffer

Journal article  |  2021  |  JOURNAL OF PHYSICS-MATERIALS

The ability to simultaneously predict the microstructure and bulk material properties of 3D printed (additively manufactured or AM..

Computational Efficient Modeling of Sintering in Multi-component Alloys for ICME Applications

TT Molla, JZ Liu, GB Schaffer

Journal article  |  2020  |  Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

The major challenge while using sintering models for simulation of densification in multi-component alloys is finding the correct ..

Computational Design of Functionally Graded Materials from Sintered Powders

T Molla, Zhe Liu, Graham Schaffer

Journal article  |  2019  |  Integrating Materials and Manufacturing Innovation

A new computational method is presented for the efficient design of alloy systems in functionally graded materials (FGMs), optimiz..

An ICME Framework for Design of Stainless Steel for Sintering

T Molla, Zhe Liu, Graham Schaffer

Journal article  |  2018  |  Integrating Materials and Manufacturing Innovation

Recent progress in the development of integrated computational materials engineering (ICME) models offers new capabilities to deal..

CFD modelling of nitrogen gas flow pattern during sintering of Al-7Zn-2.5Mg-1Cu alloy and its effect on distortion

XN Yuan, SM Aminossadati, GB Schaffer, M Qian

Journal article  |  2015  |  POWDER METALLURGY

The effects of gas flow pattern on the distortion in Al-7Zn-2.5Mg-1Cu alloy were experimentally examined by sintering three rectan..

Formation of anomalously large Al single crystals at triple points during pulsed electric current sintering (PECS) of Al86Ni6Y4.5Co2La1.5 metallic glass

XP Li, JQ Wang, M Yan, G Ji, GB Schaffer, M Qian

Journal article  |  2014  |  MATERIALS LETTERS

Anomalously large aluminium single crystals with a size of ~500 nm have been observed at triple points between powder particles af..

Warm die compaction and sintering of titanium and titanium alloy powders

SD Luo, YF Yang, GB Schaffer, M Qian

Journal article  |  2014  |  JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

A study has been made of the effect of non-lubricated warm die (200 C) compaction on the densification of hydride-dehydride (HDH) ..